6- OpenCV Python Tutorial | Draw Line, Rectangle, Circle & Text on Image (Step by Step)

Published: 10 January 2026
on channel: TechLearn(تک لرن)

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In this OpenCV Python tutorial, you will learn how to create a blank image using NumPy and draw different shapes on it using OpenCV.

In this lesson, we cover:

Creating a black image with NumPy
Understanding image dimensions and color channels (BGR)
Drawing a line using cv2.line()
Drawing a filled rectangle using cv2.rectangle()
Drawing a circle using cv2.circle()
Writing text on an image using cv2.putText()

This video is perfect for beginners in Computer Vision and OpenCV Python and is explained step by step for easy understanding.

📌 Ideal for:

Python beginners
Computer Vision students
OpenCV learners
University and self-study learners

💻 Code explanation is simple, practical, and classroom-friendly.

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